Question

Um trapézio de bases x+3 e 4x-3 , tem base média 2x +2 . A menor base mede

Answer 1

$<var> \frac{(x+3) + (4x-3)}{2} = 2x +2 \rightarrow \frac{5x}{2}= 2x+2\rightarrow 5x=4x+4\rightarrow x=4</var>$

 

Logo a base menor mede 7

Answer 2

 

 

M = b1 + b2

            2

 

2(2x+2) = x+3 + 4x - 3

 

4x + 4 = 5x 

 

x = 4

 

 

1) 4 +3 = 7

 

2) 4.4 - 3 = 13

 

3) 2.4 + 2 = 8+2 = 10